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[Official] AMD Radeon HD 7950/7970/7990 Owners Thread - Page 3852

post #38511 of 38721
Hi all, I have an XFX Radeon 7970 Dual Fan [FX-797A-TDFC].

The voltage is locked, I think i need to flash the bios. I am reading some guides and I see the risk of bricking it is very high.

Who can point me to an updated Guide ? And how do i know what PCB i have ?

Many thanks

Attached the GPU-Z main screen


Edited by savior99 - 2/23/16 at 11:03am
post #38512 of 38721
Eh its not worth flashing unless you have a dual bios in case you make a mistake just my two cents. It would suck to brick your card when it can be avoided. I would just edit your existing bios or use TriXX or afterburner for some performance gains.

I am running 2 7950 Vapor X cards and I am getting 980 TI #'s.

1175/1250


1200/1250




I was really going to get a Fury x2 and start this 4k thing but I am really at a standstill with upgrading. I am actually really looking forward to a card with display port 1.3 that can output 4k @ 120hz and a screen that can handle it which prolly won't be til end of 2016.
Edited by danycyo - 2/24/16 at 1:11am
post #38513 of 38721
I have pretty good faith the cards at the end of the year are going to flip at 4k. I'll be dammed if I have to buy 2 Pascal cards to play 4k with the vivid promises of 60fps ultra with AA on one card. Buy I seriously doubt that promise will be kept. My 2 cents.
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post #38514 of 38721
I think it has the dual bios, but i can't find the switch actually...

I am already using MSI afterburner, i tried also Trixx, I canot go past 1000 Mhz GPU Clock, Temps are ok, but voltage is locked.

That's why i wanted to flash bios, because i understand that's the only way to unlock voltage.
post #38515 of 38721
The Double D, IIRC was hardware locked, flashing with a higher voltage would show the change in software, but users reported no extra overclock headroom. I think the earliest models were not locked, but XFX locked them down pretty early with a revision. Honestly, the DDs are pretty low quality cards with a very low phase count. Not that they are not overclockable at all, but just dont expect much out of the old girl...

It is such a crying shame too, the tahiti core is an amazing piece of technology that was WAY underestimated by AMD with their reference design. While most parters would add phases and upgrade components for their non-reference designs, XFX did the opposite and cheaped out on component quality, cut phases, and locked voltages.

I am sorry for being a debby downer, maybe you are lucky and have one of the early cards with unlocked voltages, but I am pretty sure most of those blew up early in the mining craze a few years ago.
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post #38516 of 38721
Quote:
Originally Posted by danycyo View Post

Eh its not worth flashing unless you have a dual bios in case you make a mistake just my two cents. It would suck to brick your card when it can be avoided. I would just edit your existing bios or use TriXX or afterburner for some performance gains.

How could i just edit my bios please ? Do you have any link to a guide ?
post #38517 of 38721
Quote:
Originally Posted by inedenimadam View Post

The Double D, IIRC was hardware locked, flashing with a higher voltage would show the change in software, but users reported no extra overclock headroom. I think the earliest models were not locked, but XFX locked them down pretty early with a revision. Honestly, the DDs are pretty low quality cards with a very low phase count. Not that they are not overclockable at all, but just dont expect much out of the old girl...

It is such a crying shame too, the tahiti core is an amazing piece of technology that was WAY underestimated by AMD with their reference design. While most parters would add phases and upgrade components for their non-reference designs, XFX did the opposite and cheaped out on component quality, cut phases, and locked voltages.

I am sorry for being a debby downer, maybe you are lucky and have one of the early cards with unlocked voltages, but I am pretty sure most of those blew up early in the mining craze a few years ago.
Maybe i could write to XFX with the serial number of my card to ask clarification ?
I am pretty sure it has a dual bios, but I opened the case and expected the switch to be in the external side, but cannot see it .
I don't think it would make sense to put the switch in a postion so that you have to remove the VGA to press it...
post #38518 of 38721
VBE to edit your bios

http://www.techpowerup.com/forums/threads/vbe7-vbios-editor-for-radeon-hd-7000-series-cards.189089/

and a guide

http://www.overclock.net/t/1395490/ati-hd-7950-7970-bios-mod-thread

make sure you have dual bios. back up both bios files

flash at your own risk, the first few times I tried to flash my 7970s back in the day I had to recover from semi-bricked states, which is not horribly difficult, but does require allot of rebooting.
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post #38519 of 38721
many thanks dude, I guess i have something to print and study tomorrow.

I will keep you posted, but first i will write to XFX to know if i have double bios and where is the switch. I could not find a detailed manual nor in the box (I kept everything) nor on line.
post #38520 of 38721
Quote:
Originally Posted by savior99 View Post

many thanks dude, I guess i have something to print and study tomorrow.

I will keep you posted, but first i will write to XFX to know if i have double bios and where is the switch. I could not find a detailed manual nor in the box (I kept everything) nor on line.

It would likely be right behind the xfire fingers. I just happen to have a 7970 with a bios switch gathering dust on my desk, so I took a pic.

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